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Assume that when adults with smartphone are randomly selected, 55% use them in meetings or classes....

Assume that when adults with smartphone are randomly selected, 55% use them in meetings or classes. If 6 adults smartphone users are randomly selected, find the probability that at least 2 on them use their smartphones in meetings or classes

Math   Statistics-And-Probability   
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Answer #1

Let X be the number of people who use smartphones in meetings or classes

Then X ~ Binomial(6,0.55)

We need to compute

Therefore, we get that

Let me know in the comments if anything is not clear. I will reply ASAP! Please do upvote if satisfied!

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